Merge branch 'repost-of-uf2' into 'master'

[quix0rs-gnu-social.git] / plugins / Linkback / LinkbackPlugin.php

diff --git a/plugins/Linkback/LinkbackPlugin.php b/plugins/Linkback/LinkbackPlugin.php
index 84215046fa5deecf891f5805000c5b6f8c7ccd3f..3c051e88a4a2cba9bf2ce5e9f6e112e9bcc03808 100644 (file)
--- a/plugins/Linkback/LinkbackPlugin.php
+++ b/plugins/Linkback/LinkbackPlugin.php
@@ -60,14 +60,19 @@ class LinkbackPlugin extends Plugin
 
     function onHandleQueuedNotice($notice)
     {
-        if ($notice->is_local == 1) {
+        if (intval($notice->is_local) === Notice::LOCAL_PUBLIC) {
             // Try to avoid actually mucking with the
             // notice content
             $c = $notice->content;
             $this->notice = $notice;
-            // Ignoring results
-            common_replace_urls_callback($c,
-                                         array($this, 'linkbackUrl'));
+
+            if(!$notice->getProfile()->
+                getPref("linkbackplugin", "disable_linkbacks")
+            ) {
+                // Ignoring results
+                common_replace_urls_callback($c,
+                                             array($this, 'linkbackUrl'));
+            }
 
             if($notice->isRepeat()) {
                 $repeat = Notice::getByID($notice->repeat_of);
@@ -76,6 +81,11 @@ class LinkbackPlugin extends Plugin
                 $parent = $notice->getParent();
                 $this->linkbackUrl($parent->getUrl());
             }
+
+            $replyProfiles = Profile::multiGet('id', $notice->getReplies());
+            foreach($replyProfiles->fetchAll('profileurl') as $profileurl) {
+                $this->linkbackUrl($profileurl);
+            }
         }
         return true;
     }
@@ -103,21 +113,77 @@ class LinkbackPlugin extends Plugin
             return $orig;
         }
 
-        $pb = $this->getPingback($result);
-        if (!empty($pb)) {
-            $this->pingback($result->final_url, $pb);
         // XXX: Should handle relative-URI resolution in these detections
 
+        $wm = $this->getWebmention($result);
+        if(!empty($wm)) {
+            // It is the webmention receiver's job to resolve source
+            // Ref: https://github.com/converspace/webmention/issues/43
+            $this->webmention($url, $wm);
         } else {
-            $tb = $this->getTrackback($result);
-            if (!empty($tb)) {
-                $this->trackback($result->final_url, $tb);
+            $pb = $this->getPingback($result);
+            if (!empty($pb)) {
+                // Pingback still looks for exact URL in our source, so we
+                // must send what we have
+                $this->pingback($url, $pb);
+            } else {
+                $tb = $this->getTrackback($result);
+                if (!empty($tb)) {
+                    $this->trackback($result->final_url, $tb);
+                }
             }
         }
 
         return $orig;
     }
 
+    // Based on https://github.com/indieweb/mention-client-php
+    // which is licensed Apache 2.0
+    function getWebmention($result) {
+        // XXX: the fetcher only gives back one of each header, so this may fail on multiple Link headers
+        if(preg_match('~<((?:https?://)?[^>]+)>; rel="webmention"~', $result->headers['Link'], $match)) {
+            return $match[1];
+        } elseif(preg_match('~<((?:https?://)?[^>]+)>; rel="http://webmention.org/?"~', $result->headers['Link'], $match)) {
+            return $match[1];
+        }
+
+        if(preg_match('/<(?:link|a)[ ]+href="([^"]+)"[ ]+rel="[^" ]* ?webmention ?[^" ]*"[ ]*\/?>/i', $result->body, $match)
+           || preg_match('/<(?:link|a)[ ]+rel="[^" ]* ?webmention ?[^" ]*"[ ]+href="([^"]+)"[ ]*\/?>/i', $result->body, $match)) {
+            return $match[1];
+        } elseif(preg_match('/<(?:link|a)[ ]+href="([^"]+)"[ ]+rel="http:\/\/webmention\.org\/?"[ ]*\/?>/i', $result->body, $match)
+                 || preg_match('/<(?:link|a)[ ]+rel="http:\/\/webmention\.org\/?"[ ]+href="([^"]+)"[ ]*\/?>/i', $result->body, $match)) {
+            return $match[1];
+        }
+    }
+
+    function webmention($url, $endpoint) {
+        $source = $this->notice->getUrl();
+
+        $payload = array(
+            'source' => $source,
+            'target' => $url
+        );
+
+        $request = HTTPClient::start();
+        try {
+            $response = $request->post($endpoint,
+                array(
+                    'Content-type: application/x-www-form-urlencoded',
+                    'Accept: application/json'
+                ),
+                $payload
+            );
+
+            if(!in_array($response->getStatus(), array(200,202))) {
+                common_log(LOG_WARNING,
+                           "Webmention request failed for '$url' ($endpoint)");
+            }
+        } catch (HTTP_Request2_Exception $e) {
+            common_log(LOG_WARNING,
+                       "Webmention request failed for '$url' ($endpoint)");
+        }
+    }
+
     function getPingback($result) {
         if (array_key_exists('X-Pingback', $result->headers)) {
             return $result->headers['X-Pingback'];
@@ -140,9 +206,10 @@ class LinkbackPlugin extends Plugin
 
         $request = HTTPClient::start();
         try {
+            $request->setBody(xmlrpc_encode_request('pingback.ping', $args));
             $response = $request->post($endpoint,
                 array('Content-Type: text/xml'),
-                xmlrpc_encode_request('pingback.ping', $args));
+                false);
             $response = xmlrpc_decode($response->getBody());
             if (xmlrpc_is_fault($response)) {
                 common_log(LOG_WARNING,
@@ -258,4 +325,23 @@ class LinkbackPlugin extends Plugin
                                'or <a href="http://www.movabletype.org/docs/mttrackback.html">Trackback</a> protocols.'));
         return true;
     }
+
+    public function onStartInitializeRouter(URLMapper $m)
+    {
+        $m->connect('settings/linkback', array('action' => 'linkbacksettings'));
+        return true;
+    }
+
+    function onEndAccountSettingsNav($action)
+    {
+        $action_name = $action->trimmed('action');
+
+        $action->menuItem(common_local_url('linkbacksettings'),
+                          // TRANS: OpenID plugin menu item on user settings page.
+                          _m('MENU', 'Send Linkbacks'),
+                          // TRANS: OpenID plugin tooltip for user settings menu item.
+                          _m('Opt-out of sending linkbacks.'),
+                          $action_name === 'linkbacksettings');
+        return true;
+    }
 }